It is important to note that if only four nodes have been lit, engravings won't affect the lighting of any other nodes Lost Ark Gold. And if you manage to accumulate enough bonuses to light at least 15 more nodes in total, the additional will not have any effect.
There's also a third kind of engraving. All of these are negative, and could reduce the speed of your attack or damage, defense or even your movement speed. I'll return to these jerks a bit later.
When you have completed the West Luterra part from Lost Ark, two slots on your profile's gear tab open under that slot for weapons. Each slot can be equipped with an engravings installed inside. You'll see both equippable classes engravings and battle (or "combat") engravings in their submenumenus, which is accessible by pressing alt-I. You'll initially not be able to equip anything, because you need to learn them by reading recipe books.
The tutorial quest that is relevant will reward you with a few of the satchels, and you'll earn a ton of green satchels which include recipes for engraving as rewards for sidequests in East Luterra, and a few after that on Tortoyk, Annika, and Arthetine. Engraving Recipe Pouches provide random recipes.
Engraving Recipe Selection Pouches let you choose what they're stocked with and should be to keep for when you've settled on the type of build you'll be using cheap Lost Ark Gold. There are separate pouches for class and battle recipes, too. (Sometimes these are known as 'combat' recipes however they're just like the battle recipe.)